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https://issues.apache.org/jira/browse/CALCITE-6733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-6733:
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Labels: pull-request-available (was: )
> Type inferred by coercion for comparisons with decimal is too narrow
> --------------------------------------------------------------------
>
> Key: CALCITE-6733
> URL: https://issues.apache.org/jira/browse/CALCITE-6733
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.38.0
> Reporter: Mihai Budiu
> Assignee: Mihai Budiu
> Priority: Minor
> Labels: pull-request-available
>
> The following statement fails at runtime:
> {code}
> SELECT ASCII('8') >= ABS(1.1806236821);
> {code}
> with the exception:
> {code}
> java.lang.ArithmeticException: Value 56 cannot be represented as a
> DECIMAL(11, 10)
> at
> org.apache.calcite.linq4j.tree.Primitive.checkOverflow(Primitive.java:410)
> at
> org.apache.calcite.linq4j.tree.Primitive.integerDecimalCast(Primitive.java:515)
> {code}
> I have introduced this bug when reworking the type coercion.
> The cause is an incorrect derivation of precision/scale in the common type
> used for comparisons;
> {code}
> RelDataType result =
> factory.createSqlType(type2.getSqlTypeName(),
> Math.max(type1.getPrecision(), type2.getPrecision()),
> type2.getScale());
> {code}
> This is wrong, because the precision is the total number of digits, and not
> the number of digits before the decimal point. The precision is derived is
> not sufficient to store the integer number.
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